CN100373432C - Energy reclaiming method - Google Patents
Energy reclaiming method Download PDFInfo
- Publication number
- CN100373432C CN100373432C CNB2004100673686A CN200410067368A CN100373432C CN 100373432 C CN100373432 C CN 100373432C CN B2004100673686 A CNB2004100673686 A CN B2004100673686A CN 200410067368 A CN200410067368 A CN 200410067368A CN 100373432 C CN100373432 C CN 100373432C
- Authority
- CN
- China
- Prior art keywords
- voltage
- capacitor
- inductor
- switch
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to an energy recovering method. The energy recovering method of the present invention comprises steps as follows: receiving energy supply from a maintaining voltage source and charging a capacitor for the first time; receiving energy supply from a display screen and charging the capacitor for the second time; increasing the voltage of the capacitor and supplying to the display screen in a closed circuit with the capacitor. The present invention carries out charging processing on a panel capacitor by boosting voltage, and compared with the existing energy recovering method, the present invention shortens the capacitor charging time and improves the discharging character. The present invention not only recovers voltage from the panel capacitor, but also carries out charging processing on the capacitor by using a maintaining voltage; the present invention guarantees that a source capacitor can obtain stable voltage as well as recovery voltage from the panel capacitor.
Description
(1) technical field
The present invention is the invention of relevant energy reclaiming method, refers in particular to a kind of energy reclaiming method that can carry out current charges to external capacitor.
(2) background technology
Recently, the various panel display apparatus that can dwindle cathode-ray tube (CRT) (Cathode Ray Tube) weight and volume have obtained exploitation.Liquid crystal indicator (LiquidCrystal Display:LCD), Field Emission Display (Field Emission Display:FED), plasma panel (Plasma Display Panel: be designated hereinafter simply as " PDP ") and electroluminescence (Electo Lumine scence:EL) display device etc. are arranged in this panel display apparatus.
Wherein, PDP is the display element that utilizes gas discharge principle, has the advantage of easy making large display screen.The most representative is three electrodes that have shown in Figure 1, and exchanges creeping discharge type PDP by three electrodes that alternating voltage drives.
With reference to Fig. 1, the discharge cell structure that three electrodes exchange creeping discharge PDP is as follows: be formed at the 1st electrode (scan electrode) 12Y and the 2nd electrode (keeping electrode) 12Z on the upper substrate 10; Be formed at the address electrode 20X on the lower basal plate 18.
On the upper substrate 10 that the 1st electrode 12Y and the 2nd electrode 12Z form side by side, form upper dielectric layer 14 and diaphragm 16.The wall electric charge that above-mentioned upper dielectric layer 14 produces when accumulating plasma discharge.Upper dielectric layer 14 damages that cause because of sputter when diaphragm 16 can prevent plasma discharge, the while can also be improved the efficient of emitting of secondary electron.Diaphragm 16 adopts magnesium oxide (MgO) usually.
Be provided with and form lower dielectric layer 22 and dividing wall 24 on the lower basal plate 18 of address electrode 20X; Lower dielectric layer 22 and dividing wall 24 surface coated have fluorophor 26.Address electrode 20X is formed on the direction of intersecting with the 1st electrode 12Y and the 2nd electrode 12Z.Dividing wall 24 forms side by side with address electrode 20X, and the ultraviolet ray and the visible rays that produce in the time of can preventing to discharge leak in the neighboring discharge cells.
The UV-activated fluorophor 26 that produces during discharge, and any one visible rays in generation redness, green or the blueness.In the discharge space that forms by last/infrabasal plate and dividing wall 24, inject the non-active gas that is applicable to gas discharge.
Above-mentioned three electrodes exchange creeping discharge type PDP and are split into most son fields; Between each son field, by with the proportional number of light emission times of video data weight, carry out gray scale and show.Son field is split into the section of resetting, address field, the section of keeping again and eliminates section.
Here, the section of resetting is the time period that forms homogeneous wall electric charge on discharge cell; Address field is the theoretical value according to video data, produces the time period of selectivity address discharge; The section of keeping is the time period of keeping the discharge cell discharge condition of above-mentioned generation address discharge; Eliminating section is to eliminate the time period of keeping discharge of taking place in the section of keeping.
Discharging and keep in the discharge in the address of above-mentioned interchange creeping discharge PDP, needs the above high pressure of hundreds of volts.Therefore, minimize, adopt energy recycle device in order to be discharged and to keep driving electric required in the discharge in the address.Energy recycle device reclaims the voltage between the 1st electrode 12Y and the 2nd electrode 12Z, the driving voltage when then it being utilized as discharge.
Fig. 2 is applicable to keep the energy recycle device displayed map that sparking voltage reclaims.
With reference to Fig. 2, existing energy recycle device 30,32 is symmetrical across panel (PANEL) capacitor Cp.Here, the panel capacitor Cp static capacity that forms between the 1st electrode Y and the 2nd electrode Z that shows of equal value.The 1st energy recycle device 30 provides to the 1st electrode Y and keeps pulse.The 2nd energy recycle device 32 and 30 alternations of the 1st energy recycle device, and provide to the 2nd electrode Z and to keep pulse.
With reference to the 1st energy recycle device 30, the formation of existing the 1st, the 2nd energy recycle device 30,32 is described.
The structure of the 1st energy recycle device 30 is as follows: be connected in the inductor L between the capacitor Cs of panel capacitor Cp and source (SOURCE); The the 1st and the 23rd switch 2S1, the 2S3 that between source capacitor Cs and inductor L, connect side by side; The the 22nd and the 24th switch 2S2, the 2S4 that between panel capacitor Cp and inductor L, connect side by side.
The 22nd switch 2S2 with keep voltage source V s and be connected, the 24th switch 2S4 then is connected with base voltage source GND.Source capacitor Cs is when keeping discharge, and the voltage that reclaims panel capacitor Cp charging charges, and simultaneously charging voltage is supplied with again to panel capacitor Cp.Capacitor Cs charging in source is equivalent to keep the Vs/2 voltage of the general value of voltage source V s.Inductor L and panel capacitor Cp together form resonance circuit.Flowing of the 21st to the 24th switch 2S1 to 2S4 Control current.
On the one hand, be arranged on the 25th and the 26th diode 2D5,2D6 between the 21 and the 23rd switch 2S1,2S3 and the inductor L separately, prevent that the contrary direction of electric current from flowing.
Fig. 3 shows the ON/OFF timing of the 1st energy recycle device switch and the timing diagram and the oscillogram of panel capacitor Cp output waveform.
Suppose that the charging voltage before the T1 time period among the panel capacitor Cp is 0, the charging voltage of source capacitor Cs is Vs/2, then the course of work is elaborated.
The T1 time period, the 21st switch 2S1 opens (Turn-on), forms the current return of source capacitor Cs to the 21 switch 2S1, inductor L and panel panel capacitor Cp.In case the formation current return, the Vs/2 voltage that is charged among the capacitor Cs of source will supply to panel capacitor Cp.At this moment, inductor L and panel capacitor Cp form the series resonance loop, so charging voltage reaches the Vs voltage of source capacitor Cs voltage twice among the panel capacitor Cp.
The T2 time period is opened the 22nd switch 2S2.In case open the 22nd switch 2S2, the voltage of keeping voltage source V s will be provided to the 1st electrode Y.What supply to the 1st electrode Y keeps voltage source V s voltage, and the voltage that prevents panel capacitor Cp drops to be kept below the voltage source V s; And guarantee to keep the normal generation of discharge.On the one hand, the voltage of panel capacitor Cp rises to Vs in the T1 time period, therefore keeps discharge in order to produce, and the driving electric that the outside is supplied with minimizes.
The T3 time period, close (Turn-off) the 21st switch 2S1.What at this moment, the 1st electrode Y kept the T3 time period keeps voltage source V s voltage.
The T4 time period, open the 23rd switch 2S3 when closing the 22nd switch 2S2.After the 23rd switch 2S3 opens, will form from panel capacitor Cp to inductor L and the current return of the 23rd switch 2S3, source capacitor Cs, and the voltage that is charged among the panel capacitor Cp is recovered among the capacitor Cs of source.At this moment, the charging voltage of source capacitor Cs is Vs/2.
The T5 time period, when closing the 23rd switch 2S3, open the 24th switch 2S4.After the 24th switch 2S4 opens, form the current return between panel capacitor Cp and the base voltage source GND, the voltage of panel capacitor Cp will drop to 0 volt.The T6 time period, the T5 state is kept certain hour.In fact, supply to the AC driving pulse of the 1st electrode Y and the 2nd electrode Z, produce in regularly carrying out repeatedly in T1 to the T6 time period.On the one hand, the 2nd energy recycle device 32 with 30 alternations of the 1st energy recycle device, and is supplied with driving voltage to panel capacitor Cp as Fig. 4.
As, need in energy recycle device, both can improve the flash-over characteristic of panel now, and can also guarantee to hold time stable, can also improve simultaneously from the recover energy technology of efficient of panel.For this reason, reduce the induction coefficient of inductor L, accelerate to be provided to the voltage rise time on the panel, improve flash-over characteristic with this; And, can improve organic efficiency by strengthening the induction coefficient of inductor L.But existing energy recycle device uses identical inductor L on the charge/discharge loop, if reduce the induction coefficient of inductor L, and add fast attack time, and peak point current will strengthen, so energy recovery efficiency will descend.On the contrary, if by strengthening inductor L, improve organic efficiency, the voltage rise time that supplies on the panel can be elongated, so flash-over characteristic can be low, and be difficult to guarantee to hold time.
Simultaneously, existing energy recycle device when recovery operation, the voltage of about Vs/2 that on the capacitor Cs of source, charge.But, owing to only utilize the energy that is charged to panel capacitor Cp that source capacitor Cs is charged, therefore in fact being charged to the voltage among the capacitor Cs of source, major part is set to the following voltage of Vs/2.
(3) summary of the invention
Purpose of the present invention will address the above problem exactly, and a kind of energy reclaiming method that can fully charge to external capacitor is provided.
In order to achieve the above object, the energy reclaiming method among the present invention divides following step:
The 1st step is supplied with from keeping the voltage source received energy, and external capacitor is carried out the 1st charging, and the electric pressure of panel capacitor maintains keeps electric pressure;
The 2nd step is supplied with from the panel capacitor received energy, and external capacitor is carried out the 2nd charging, and the voltage composition of inefficient power is recovered in the external capacitor by switch and inductor in the panel capacitor;
The 3rd step comprises in the closed loop of external capacitor, carries out charging process by being charged to the voltage on the external capacitor and resulting from the booster voltage counter plate capacitor that the back voltage addition on the inductor forms.
Further comprising the steps of content: from the above-mentioned the 1st and the 2nd step, energy recovery forms insulation between closed loop and panel capacitance behind the closed loop.
When above-mentioned closed loop and panel capacitance form insulation, be included on the inductor in the closed loop and accumulate electric current.
After accumulating electric current on the above-mentioned inductor, cut off the electric property connection of closed loop, on inductor, form back voltage.
Charging voltage value addition on back voltage on the above-mentioned inductor and the capacitor, voltage will rise.
After above-mentioned the 3rd step, the voltage of keeping voltage source is supplied to panel capacitance.
Effect of the present invention:
As telling about the front, in the energy reclaiming method among the present invention, owing to utilize booster voltage counter plate capacitor to carry out charging process, than existing energy reclaiming method, its panel capacitor duration of charging is shorter, therefore can improve flash-over characteristic.Simultaneously, among the present invention, except the voltage that reclaims from panel capacitor Cp, also utilize and keep voltage Vs capacitor is carried out charging process, therefore in the capacitor of source, can be charged to necessary voltage in the stable operation.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is that existing three electrodes exchange creeping discharge type plasma panel discharge cell structure oblique view.
Fig. 2 is existing energy recycle device loop diagram.
Fig. 3 is the energy recycle device course of work transition diagram shown in Fig. 2.
Fig. 4 is the energy recycle device loop diagram among the present invention the 1st embodiment.
Fig. 5 is the energy recycle device course of work transition diagram shown in Fig. 4.
Fig. 6 is the process loop figure that charges in the energy recycle device inductor shown in Fig. 4.
Fig. 7 provides the process loop figure of booster voltage to the energy recycle device panel capacitor shown in Fig. 4.
Fig. 8 is the process displayed map of carrying out voltage charging to the capacitor shown in Fig. 4.
Fig. 9 is the loop diagram of energy recycle device among this invention the 2nd embodiment.
Figure 10 is the energy recycle device course of work transition diagram shown in Fig. 9.
Figure 11 is the loop diagram of energy recycle device among this invention the 3rd embodiment.
The symbol description of major part in the accompanying drawing:
10: upper substrate 12Y, 12Z: electrode
14,22: dielectric layer 16: diaphragm
18: lower basal plate 20X: address electrode
24: dividing wall 30,32: energy recycle device
(5) embodiment
Below with reference to Fig. 4 to Figure 11, the embodiment of energy reclaiming method of the present invention is elaborated.
Fig. 4 is the energy recycle device displayed map among the present invention the 1st embodiment.
With reference to Fig. 4, the energy recycle device structure among the present invention the 1st embodiment is as follows: external capacitor Css (hereinafter to be referred as capacitor Css), inductor L and the 1st switch S 1 that can form the closed loop; Via the 2nd node n2, the 2nd switch S 2 that is connected with panel capacitor Cp; Be connected in the 2nd node n2 and keep the 3rd switch S 3 between the voltage source V s.
The static capacity of panel capacitor Cp display panel, drawing symbol Re and R_Cp are formed at the electrode on the panel and the dead resistance of unit.The the 1st to the 3rd switch S 1 to S3 is used thyristor, for example thyristors such as MOS FET, IGBT, SCR, BJT.The 1st switch S 1 from the side terminal of capacitor Css, via inductor L and the 1st switch S 1, up to the opposite side terminal of capacitor Css, forms the electric current closed loop under open mode.In this closed loop, between closed loop and panel capacitance Cp, form insulation, at this moment, because the electric charge of capacitor Css discharge will be accumulated electric current in the inductor.After the 1st switch S 1 was opened, the two ends of inductor L produced back voltage.Then, among the 1st node n1, the back voltage addition among the voltage of capacitor Css and the inductor L forms booster voltage.
The 2nd switch S 2 supplies to the booster voltage among the 1st node n1 among the panel capacitor Cp, and the energy voltage composition that will be recovered to from panel capacitor Cp simultaneously supplies among the capacitor Css via inductor L.Keep electric pressure for panel capacitor Cp voltage is maintained to, the 3rd switch S 3 has played to panel capacitor Cp the effect of keeping voltage Vs is provided.
In conjunction with Fig. 5, the work of the energy recycle device among Fig. 4 is described.
T0 is in the time period till the t1, open the 1st switch S 1 after, as Fig. 6 by capacitor Css and the L shaped one-tenth of inductor closed loop.At this moment in the section, because the electric charge of capacitor Css discharge, inductor L will charging current between.Therefore, at this moment between the section in, the electric current of inductor L can increase.
The t1 that the 1st switch S 1 is disconnected as Fig. 7, produces back voltage among the inductor L constantly.Result from the back voltage on the inductor L,, supply among the panel capacitor Cp via the internal body diodes of the 2nd switch S 2.And, be charged to that voltage also can supply among the panel capacitor Cp among the capacitor Css.As a result, be charged to the voltage on the capacitor Css and result from the booster voltage that the back voltage addition on the inductor L forms, counter plate capacitor Cp carries out charging process.In case above-mentioned booster voltage supplies among the panel capacitor Cp, the voltage rise time that is charged among the panel capacitor Cp can accelerate.
In the t2 moment, the 3rd switch S 3 is opened.In case the 3rd switch S 3 is opened, to keep voltage Vs and will supply among the panel capacitor Cp, the electric pressure of panel capacitor Cp will be kept electric pressure.Keep in the electric pressure at this, be formed at and produce discharge on the electrode in the panel unit.On the one hand, the time period between the t2 to t3 is set to, and produces the stable discharge of keeping in the unit.
In the t3 moment, the 2nd switch S 2 is opened.In case the 2nd switch S 2 is opened, be sent to the voltage of keeping on the 2nd node n2, supply among the capacitor Css via inductor L.At this moment, capacitor Css charging certain voltage.In fact, in the present invention, the time period between the t3 to t4 is set shorter, so the lower voltage that will charge among the capacitor Css.
In the t4 moment, the 3rd switch S 3 is disconnected.In case the 3rd switch S 3 is disconnected, from panel capacitor Cp, do not participate in the energy that discharges, promptly the voltage composition of inefficient power is recovered among the capacitor Css via the 2nd switch S the 2, the 1st switch S 1 and inductor L.Here, the magnitude of voltage that is charged among the capacitor Css is, t3 charging voltage and the closing of t4 recovery magnitude of voltage constantly constantly.
As noted earlier, in order to improve the energy recovery efficiency of energy recycle device among the present invention, even with the induction coefficient of L set very big, also can accelerate to supply to the booster voltage rise time on the panel by regulating opening the time of the 1st switch S 1.In other words, the induction coefficient of energy recycle device among the present invention and inductor L is irrelevant, just utilizes the adjusting of 1 switching time of the 1st switch S, the rise time that just can accelerate booster voltage; Therefore can improve energy recovery efficiency, the rise time that can also accelerate booster voltage simultaneously by strengthening the induction coefficient of inductor L.
And, can be among the present invention to the capacitor Css sufficient voltage that charges.In other words, except the voltage that is recovered to from panel capacitor Cp, also from keep voltage Vs, receive voltage (as shown in Figure 8), therefore can in capacitor Css, be charged to voltage necessary in the steady operation.
Fig. 9 is the loop diagram of energy recycle device among the present invention the 2nd embodiment.
With reference to Fig. 9, the energy recycle device structure among the present invention the 2nd embodiment is as follows: capacitor Css, inductor L and the 1st switch S 1 and the 4th switch S 4 that can form the closed loop; Be connected jointly with the 1st and the 4th switch S 1, S4 via the 1st step n1, simultaneously via the 2nd node n2, the 2nd switch S 2 that is connected with panel capacitor Cp; Be connected in the 2nd node n2 and keep the 3rd switch S 3 between the voltage source V s; Connect the 5th switch S 5 between the 2nd node n2 and the base voltage source.
The the 1st to the 5th switch S 1, S2, S3, S4, S5 use thyristor, for example thyristors such as MOS FET, IGBT, SCR, BJT.
After the 1st switch and the 4th switch S 1, S4 are opened,,,, form the electric current closed loop up to the opposite side terminal of capacitor Css via inductor L and the 4th switch S 4 and the 1st switch S 1 from the side terminal of capacitor Css.In this closed loop, because the electric charge of capacitor Css discharge will be accumulated electric current among the inductor L.After the 1st switch S 1 was opened, the two ends of inductor L produced back voltage.Then, among the 1st node n1, the back voltage addition among the voltage of capacitor Css and the inductor L forms booster voltage.The the 2nd and the 4th switch S 2, S4 supply to the booster voltage among the 1st node n1 among the panel capacitor Cp, and the energy voltage composition that will be recovered to from panel capacitor Cp simultaneously supplies among the capacitor Css via inductor L.
Keep electric pressure for panel capacitor Cp voltage is maintained to, the 3rd switch S 3 has played to panel capacitor Cp the effect of keeping voltage Vs is provided.
The 4th switch S 4 is opened in the voltage of panel capacitor Cp is kept time period of basic current potential, ON/OFF process repeatedly then in all the other time periods.The 5th switch S 5 was opened in time period from basic current potential to panel capacitor Cp that supply with.
In conjunction with Figure 10, the work of the energy recycle device among Fig. 9 is described.
T0 is in the time period till the t1, open the 1st and the 4th switch S 1, S4 after, form the closed loop by capacitor Css, inductor L, the 1st and the 4th switch S 1, S4.At this moment in the section, because the electric charge of capacitor Css discharge, inductor L will charging current between.The t1 that the 1st switch S 1 is disconnected produces back voltage among the inductor L constantly.Result from the back voltage on the inductor L, the internal body diodes via the 4th switch S the 4, the 2nd switch S 2 supplies among the panel capacitor Cp.And, be charged to that voltage also can supply among the panel capacitor Cp among the capacitor Css.As a result, be charged to the voltage on the capacitor Css and result from the booster voltage that the back voltage addition on the inductor L forms, counter plate capacitor Cp carries out charging process.In case above-mentioned booster voltage supplies among the panel capacitor Cp, the voltage rise time that is charged among the panel capacitor Cp can accelerate.
In the t2 moment, the 3rd switch S 3 is opened.In case the 3rd switch S 3 is opened, to keep voltage Vs and will supply among the panel capacitor Cp, the electric pressure of panel capacitor Cp will be kept electric pressure.Keep in the electric pressure at this, be formed at and produce discharge on the electrode in the panel unit.On the one hand, the time period between the t2 to t3 is set to, and produces the stable discharge of keeping in the unit.
In the t3 moment, the 2nd switch S 2 is opened.In case the 2nd switch S 2 is opened, be sent to the voltage of keeping on the 2nd node n2, supply among the capacitor Css via inductor L.At this moment, capacitor Css charging certain voltage.In fact, in the present invention, the time period between the t3 to t4 is set shorter, so the lower voltage that will charge among the capacitor Css.
In the t4 moment, the 3rd switch S 3 is disconnected.In case the 3rd switch S 3 is opened, from panel capacitor Cp, do not participate in the energy that discharges, promptly the voltage composition of inefficient power is recovered among the capacitor Css via the 2nd switch S the 2, the 4th switch S 4 and inductor L.Here, the magnitude of voltage that is charged among the capacitor Css is, t3 charging voltage and the closing of t4 recovery magnitude of voltage constantly constantly.
Figure 11 is the displayed map of energy recycle device among the present invention the 3rd embodiment.
With reference to Figure 11, the energy recycle device structure among the present invention the 3rd embodiment is as follows: capacitor Css, inductor L and the 1st switch S 1 and the 2nd switch S 2 that can form the closed loop; Be connected in the 2nd node n2 and keep the 3rd switch S 3 between the voltage source V s.
The static capacity of panel capacitor Cp display panel.The the 1st to the 3rd switch S 1 to S3 is used thyristor, for example thyristors such as MOS FET, IGBT, SCR, BJT.
The 1st switch S 1 from the side terminal of capacitor Css, via inductor L and the 1st switch S 1, up to the opposite side terminal of capacitor Css, forms the electric current closed loop under open mode.In this closed loop, because the electric charge of capacitor Css discharge will be accumulated electric current in the inductor.After the 1st switch S 1 was opened, the two ends of inductor L produced back voltage.Then, among the 1st node n1, the back voltage addition among the voltage of capacitor Css and the inductor L forms booster voltage.
The 2nd switch S 2 just is opened to capacitor Css supply power the time.Keep electric pressure for panel capacitor Cp voltage is maintained to, the 3rd switch S 3 has played to panel capacitor Cp the effect of keeping voltage Vs is provided.
In conjunction with Fig. 5, the work of the energy recycle device among Figure 11 is described.
T0 is in the time period till the t1, open the 1st switch S 1 after, form the closed loop by the internal body diodes and the 1st switch S 1 of capacitor Css, inductor L, the 2nd switch S 2.At this moment in the section, because the electric charge of capacitor Css discharge, inductor L will charging current between.Therefore, at this moment between the section in, the electric current of inductor L can increase.On the one hand, t0 is in the time period of t1, and what the 2nd switch S 2 also can appending property is opened.
The t1 that the 1st switch S 1 is disconnected produces back voltage among the inductor L constantly.Result from the back voltage on the inductor L,, supply among the panel capacitor Cp via the internal body diodes of the 2nd switch S 2.And, be charged to that voltage also can supply among the panel capacitor Cp among the capacitor Css.As a result, be charged to the voltage on the capacitor Css and result from the booster voltage that the back voltage addition on the inductor L forms, counter plate capacitor Cp carries out charging process.In case above-mentioned booster voltage supplies among the panel capacitor Cp, the voltage rise time that is charged among the panel capacitor Cp can accelerate.
In the t2 moment, the 3rd switch S 3 is opened.In case the 3rd switch S 3 is opened, to keep voltage Vs and will supply among the panel capacitor Cp, the electric pressure of panel capacitor Cp will be kept electric pressure.Keep in the electric pressure at this, be formed at and produce discharge on the electrode in the panel unit.On the one hand, the time period between the t2 to t3 is set to, and produces the stable discharge of keeping in the unit.
In the t3 moment, the 2nd switch S 2 is opened.In case the 2nd switch S 2 is opened, be sent to the voltage of keeping on the 2nd node n2, supply among the capacitor Css via inductor L.At this moment, capacitor Css charging certain voltage.In fact, in this invention, the time period between the t3 to t4 is set shorter, so the lower voltage that will charge among the capacitor Css.
In the t4 moment, the 3rd switch S 3 is disconnected.In case the 3rd switch S 3 is opened, from panel capacitor Cp, do not participate in the energy that discharges, promptly the voltage composition of inefficient power is recovered among the capacitor Css via the 2nd switch S the 2, the 4th switch S 4 and inductor L.Here, the magnitude of voltage that is charged among the capacitor Css is, t3 charging voltage and the closing of t4 recovery magnitude of voltage constantly constantly.
Energy reclaiming method of the present invention in sum comprises: the 1st step, and supply with from keeping the voltage source received energy, and external capacitor Css is carried out the 1st charging; The 2nd step is supplied with from the display screen received energy, and external capacitor Css is carried out the 2nd charging; The 3rd step comprises in the closed loop of external capacitor Css, improves the voltage of external capacitor Css, and supplies to display screen.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (6)
1. energy reclaiming method is characterized in that may further comprise the steps:
The 1st step is supplied with from keeping the voltage source received energy, and external capacitor is carried out the 1st charging, and the electric pressure of panel capacitor maintains keeps electric pressure;
The 2nd step is supplied with from the panel capacitor received energy, and external capacitor is carried out the 2nd charging, and the voltage composition of inefficient power is recovered in the external capacitor by switch and inductor in the panel capacitor;
The 3rd step comprises in the closed loop of external capacitor, carries out charging process by being charged to the voltage on the external capacitor and resulting from the booster voltage counter plate capacitor that the back voltage addition on the inductor forms.
2. energy reclaiming method as claimed in claim 1 is characterized in that:
From the described the 1st and the 2nd step, energy recovery forms insulation between closed loop and panel capacitance behind the closed loop.
3. energy reclaiming method as claimed in claim 2 is characterized in that, also comprises:
When described closed loop and panel capacitance form insulation, be included on the inductor in the closed loop and accumulate electric current.
4. energy reclaiming method as claimed in claim 3 is characterized in that, also comprises:
After accumulating electric current on the described inductor, cut off the electric property connection of closed loop, on inductor, form back voltage.
5. energy reclaiming method as claimed in claim 4 is characterized in that, also comprises:
Charging voltage value addition on back voltage on the described inductor and the capacitor, voltage will rise.
6. energy reclaiming method as claimed in claim 1 is characterized in that, also comprises:
After described the 3rd step, the voltage of keeping voltage source is supplied to panel capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100673686A CN100373432C (en) | 2004-10-22 | 2004-10-22 | Energy reclaiming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100673686A CN100373432C (en) | 2004-10-22 | 2004-10-22 | Energy reclaiming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1763815A CN1763815A (en) | 2006-04-26 |
| CN100373432C true CN100373432C (en) | 2008-03-05 |
Family
ID=36747928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100673686A Expired - Fee Related CN100373432C (en) | 2004-10-22 | 2004-10-22 | Energy reclaiming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100373432C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030350B (en) * | 2007-04-04 | 2011-04-20 | 咸阳华清设备科技有限公司 | Complete resonant circuit for restoring PDD energy |
| US20130320954A1 (en) * | 2012-06-01 | 2013-12-05 | Fairchild Semiconductor Corporation | Switched-mode voltage converter with energy recovery system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0704834A1 (en) * | 1994-09-28 | 1996-04-03 | Nec Corporation | Driver circuit for dot matrix AC plasma display panel of memory type |
| US20030030632A1 (en) * | 2001-08-08 | 2003-02-13 | Choi Jeong Pil | Energy recovery circuit of display device |
| EP1310936A1 (en) * | 2001-11-09 | 2003-05-14 | Matsushita Electric Industrial Co., Ltd. (MEI) | Energy recovery circuit for driving a capacitive load |
-
2004
- 2004-10-22 CN CNB2004100673686A patent/CN100373432C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0704834A1 (en) * | 1994-09-28 | 1996-04-03 | Nec Corporation | Driver circuit for dot matrix AC plasma display panel of memory type |
| US20030030632A1 (en) * | 2001-08-08 | 2003-02-13 | Choi Jeong Pil | Energy recovery circuit of display device |
| EP1310936A1 (en) * | 2001-11-09 | 2003-05-14 | Matsushita Electric Industrial Co., Ltd. (MEI) | Energy recovery circuit for driving a capacitive load |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1763815A (en) | 2006-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1550996B1 (en) | Energy recovery apparatus and method for a plasma display panel | |
| US7026765B2 (en) | Apparatus and method for energy recovery | |
| CN100373432C (en) | Energy reclaiming method | |
| KR100426190B1 (en) | Apparatus and mehtod of driving plasma display panel | |
| KR100588019B1 (en) | Energy recovery apparatus and method of plasma display panel | |
| KR20010083658A (en) | Energy Recovery Apparatus in Plasma Display Panel | |
| US7352343B2 (en) | Energy recovering apparatus and method for plasma display panel | |
| KR100508243B1 (en) | Apparatus for driving of plasma display panel | |
| KR20070087717A (en) | Driving apparatus for plasma display panel | |
| US20050007310A1 (en) | Apparatus and method for energy recovery | |
| KR100480153B1 (en) | Apparatus and method 0f sustain driver with energy recovery | |
| KR100475157B1 (en) | Plasma display panel | |
| KR100640054B1 (en) | Energy recovery apparatus and method of plasma display panel | |
| KR101058142B1 (en) | Energy recovery device and recovery method of plasma display panel | |
| KR100503730B1 (en) | Apparatus and Method of Energy Recovery | |
| KR100582201B1 (en) | Energy recovery apparatus and method of plasma display panel | |
| KR100547978B1 (en) | Method of Energy Recovery | |
| KR100452690B1 (en) | Plasma display panel | |
| KR100488451B1 (en) | Apparatus of Energy Recovery and Energy Recovering Method Using the same | |
| KR100539006B1 (en) | Apparatus and method 0f energy recovery | |
| US7397446B2 (en) | Plasma display panel driving circuit | |
| KR20040105919A (en) | Apparatus and Method of Driving Plasma Display Panel | |
| KR100508247B1 (en) | Energy recovery apparatus and method of plasma display panel | |
| KR100762141B1 (en) | A driving circuit and a method of Plasma Display Panel | |
| CN101231812A (en) | Plasma display device and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |